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NetScaler HA and HeartBeat messages


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Hello,

 

Every 24h i received this message on my NetScaler (VPX instance on SDX appliance).

 

Time : < every 24h at the exact time the NetScaler is rebooted at an moment before>
Source : <netscaler IP address>
Host Name : < netscaler hostname>
Category : HANoHeartBeats
Severity : Critical
FailureObject : 0/1 LA/1
Information : ha_nics : 0/1 LA/1, haLastNicMonitorFailed : 0/1, Entity : <netscaler IP> HANoHeartBeats:0/1 LA/1, Device_family : ns
Critrical alerts from NetScalers

 

So, by example, when i reboot the NetScaler at 14:00, every day after this reboot, i receive the above message at 14:00.

 

Is there an scheduled task or something on a NetScaler what causes this problem?

 

Thanks in advance.

 

Marcel

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Hi Marcel,

Could you please answer below queries:

1: Are you receiving the message from some TRAP manager/syslog or you are checking it directly on the NetScaler.

2: Can you please check what is the NetScaler uptime and if device are in HA, please check HA status.

>stat system

>sh ha node 

Above 2 commands will help you to check if NetScaler is actually rebooting or it's a false alarm.

if reboot is the case failover should also happen and UPtime of NetScaler must change.

 

Also you can check /var/log/ns.log  files for that time duration under Shell mode(by typing shell in NetScaler CLI) this will help you to understand more on the issue.

Please not that the files gets archive so you may have to look into the ns.log.X.gz files for perticular time.

 

Hope this helps.

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Hello,

 

- I receive this mhe messages from NetScaler MAS (SNMP/Syslog). I see the message alson on the Dashboard off the NetScaler

Message is:  (interface(0/1): No HA Heartbeats Missed 15 heartbeats

 

- The NetScaler uptime is OK. The NetScaler didn't reboot or something like that.

The output from sh ha node is the following:

> sh ha node
1)      Node ID:      0
        IP:    <IP and name of active NetScaler>
        Node State: UP
        Master State: Primary
        Fail-Safe Mode: OFF
        INC State: DISABLED
        Sync State: ENABLED
        Propagation: ENABLED
        Enabled Interfaces : 0/1 LA/1
        Disabled Interfaces : None
        HA MON ON Interfaces : 0/1 LA/1
        HA HEARTBEAT OFF Interfaces : None
        Interfaces on which heartbeats are not seen : LA/1
        Interfaces causing Partial Failure: None
        SSL Card Status: UP
        Hello Interval: 200 msecs
        Dead Interval: 3 secs
        Node in this Master State for: 0:22:1:35 (days:hrs:min:sec)
2)      Node ID:      1
        IP:    <IP of Secondary NetScaler>
        Node State: UP
        Master State: Secondary
        Fail-Safe Mode: OFF
        INC State: DISABLED
        Sync State: SUCCESS
        Propagation: ENABLED
        Enabled Interfaces : 0/1 LA/1
        Disabled Interfaces : None
        HA MON ON Interfaces : 0/1 LA/1
        HA HEARTBEAT OFF Interfaces : None
        Interfaces on which heartbeats are not seen : LA/1
        Interfaces causing Partial Failure: None
        SSL Card Status: UP

 

What does the line 'Interfaces on which heartbeats are not seen : LA/1' mean?

 

 

 

 

 

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Hi Marcel,

 

The above messages(Interfaces on which heartbeats are not seen : LA/1) will appear when NetScalers in HA are unable to exchange HA heartbeat on those interfaces. this may be caused by some Network connectivity issues.

In this case the interfaces on the NetScaler are missing heartbeat and sending trap to MAS.

 

Is this a new deployment or was working earlier without any issues?

Is it happening for only one NetScaler or both the NetScalers?

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thank you for the explanation about the message.

 

This is a new deployment and for as far as I can see it now, this only happens on the first netscaler.

Yesterday there was a failover and the NetScaler that is now the primary does not show the message.

 

The NetScalers are virtual appliances on SDX fysical appliances.

 

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That makes sense, can you please check on SDX console if there is any issue happening on that Physical interface(10/X) bound to that particular VPX. 

Also would request you to check on the switch side of that physical interface.

 

The physical interface bound to this VPX, is it used anywhere else in the system(like any other VPX)? If yes, you may like to check there for any HA/interface related issues.

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  • 2 weeks later...

Thank you for your answer Basantballab.

I will check the SDX console and will ask the network administrator to check the switch side when I am back from summer holiday.

I do indeed have the same issue on an other  VPX on that same SDX.

 

I will keep you informed of the status. If you or someone else have any suggestions about a possible cause, then of course I would like to hear them.

 

Thanks in advance

 

Marcel

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  • 1 month later...

Hi guys, sorry for the last update. Because of the many activities I could not respond earlier. :-(
The problem is still there. All VPXs on the SDX provide the error message about the HA status every 24 hours as indicated above. The VPX gives the message 24 hours after a reboot. For VPX 1 this is at a different time than VPX 2. There is no message on the SDX, and the network manager can not see any messages on the switch.  So it has to do with the netscaler? I have updated the SDX appliance (The SDX was two versions behind the version on the VPXs.) to the same version as the VPXs (12.0.57-24) but that did not solve the problem in any case.

 

For now i have changed the time by the configuration of the HA Node. I have increased the Hello interval to 400 msec and the Dead Interval tot 6 seconds but this has no effect. The error message remains every 24h.

 

Is someone familiar with this?

 

Regards,

Marcel

 

 

 

 

 

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  • 1 year later...
  • 3 months later...

I have 2 peers of VPX on SDX with the same error on the LACP channel:

Interfaces on which heartbeats are not seen : LA/2

 

I tried to add an new untagged VLAN through the LACP Channel and the Switches in between, but i still didn't help:

 

6)      VLAN ID: 935    VLAN Alias Name: LBDMZ_HA
        Channels : LA/2
 Done

 

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Found it : The new vlan 935 in my last post was blocked on a Switch between both SDX.

Since I correct it, it works fine

 

> sh ha node
1)      Node ID:      0
        IP: 192.168.194.206 (lbdmzuni01)
        Node State: UP
        Master State: Primary
        Fail-Safe Mode: OFF
        INC State: DISABLED
        Sync State: ENABLED
        Propagation: ENABLED
        Enabled Interfaces : 0/1 LA/2
        Disabled Interfaces : None
        HA MON ON Interfaces : 0/1 LA/2
        HA HEARTBEAT OFF Interfaces : None
        Interfaces on which heartbeats are not seen : None
        Interfaces causing Partial Failure: None
        SSL Card Status: UP
        Hello Interval: 200 msecs
        Dead Interval: 3 secs
        Node in this Master State for: 0:16:59:48 (days:hrs:min:sec)
2)      Node ID:      1
        IP: 192.168.194.205
        Node State: UP
        Master State: Secondary
        Fail-Safe Mode: OFF
        INC State: DISABLED
        Sync State: SUCCESS
        Propagation: ENABLED
        Enabled Interfaces : 0/1 LA/2
        Disabled Interfaces : None
        HA MON ON Interfaces : 0/1 LA/2
        HA HEARTBEAT OFF Interfaces : None
        Interfaces on which heartbeats are not seen : None
        Interfaces causing Partial Failure: None
        SSL Card Status: UP

Local node information:
        Critical Interfaces: 0/1 LA/2
 Done

 

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